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<p>This page explains how to interpret the graphs that are generated by doxygen.</p>
<p>Consider the following example: </p>
<div class="fragment"><div class="line"><span class="comment">/*! Invisible class because of truncation */</span></div>
<div class="line"><span class="keyword">class </span>Invisible { };</div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment">/*! Truncated class, inheritance relation is hidden */</span></div>
<div class="line"><span class="keyword">class </span>Truncated : <span class="keyword">public</span> Invisible { };</div>
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<div class="line"><span class="comment">/* Class not documented with doxygen comments */</span></div>
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<div class="line"><span class="keyword">class </span>PublicBase : <span class="keyword">public</span> Truncated { };</div>
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<div class="line"><span class="comment">/*! A template class */</span></div>
<div class="line"><span class="keyword">template</span>&lt;<span class="keyword">class</span> T&gt; <span class="keyword">class </span>Templ { };</div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment">/*! Class that is inherited using protected inheritance */</span></div>
<div class="line"><span class="keyword">class </span>ProtectedBase { };</div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment">/*! Class that is inherited using private inheritance */</span></div>
<div class="line"><span class="keyword">class </span>PrivateBase { };</div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment">/*! Class that is used by the Inherited class */</span></div>
<div class="line"><span class="keyword">class </span>Used { };</div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment">/*! Super class that inherits a number of other classes */</span></div>
<div class="line"><span class="keyword">class </span>Inherited : <span class="keyword">public</span> PublicBase,</div>
<div class="line">                  <span class="keyword">protected</span> ProtectedBase,</div>
<div class="line">                  <span class="keyword">private</span> PrivateBase,</div>
<div class="line">                  <span class="keyword">public</span> Undocumented,</div>
<div class="line">                  <span class="keyword">public</span> Templ&lt;int&gt;</div>
<div class="line">{</div>
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<div class="line">    Used *m_usedClass;</div>
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</div><!-- fragment --><p> This will result in the following graph:</p>
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<img src="../../graph_legend.png" />
</div>
</center><p>The boxes in the above graph have the following meaning: </p>
<ul>
<li>
A filled gray box represents the struct or class for which the graph is generated. </li>
<li>
A box with a black border denotes a documented struct or class. </li>
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A box with a grey border denotes an undocumented struct or class. </li>
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A box with a red border denotes a documented struct or class forwhich not all inheritance/containment relations are shown. A graph is truncated if it does not fit within the specified boundaries. </li>
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<p>The arrows have the following meaning: </p>
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<li>
A dark blue arrow is used to visualize a public inheritance relation between two classes. </li>
<li>
A dark green arrow is used for protected inheritance. </li>
<li>
A dark red arrow is used for private inheritance. </li>
<li>
A purple dashed arrow is used if a class is contained or used by another class. The arrow is labeled with the variable(s) through which the pointed class or struct is accessible. </li>
<li>
A yellow dashed arrow denotes a relation between a template instance and the template class it was instantiated from. The arrow is labeled with the template parameters of the instance. </li>
</ul>
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